42501166 has 8 divisors (see below), whose sum is σ = 64134000. Its totient is φ = 21123168.

The previous prime is 42501163. The next prime is 42501209. The reversal of 42501166 is 66110524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42501166² = 3612698222719112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42501166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42501161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63291 + ... + 63958.

It is an arithmetic number, because the mean of its divisors is an integer number (8016750).

Almost surely, 2^42501166 is an apocalyptic number.

42501166 is a deficient number, since it is larger than the sum of its proper divisors (21632834).

42501166 is a wasteful number, since it uses less digits than its factorization.

42501166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127418.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42501166 is about 6519.2918327070. The cubic root of 42501166 is about 348.9797937415.

The spelling of 42501166 in words is "forty-two million, five hundred one thousand, one hundred sixty-six".